/*
 *  fx/Filter.h
 *
 *  Copyright 2009 Peter Barth
 *
 *  This file is part of Milkytracker.
 *
 *  Milkytracker is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Milkytracker is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Milkytracker.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef FILTER_H
#define FILTER_H

#define PRGB2SHORT(r, g, b) ((((r)) << 11) + (((g)) << 5) + ((b)))
#define RGB2SHORT(r, g, b) ((((r >> 3)) << 11) + (((g >> 2)) << 5) + ((b >> 3)))

class Filter
{
    private:
        static void applyRadialToSector(unsigned short* buffer, int width, int height, int pitch,
                                        int xCenter, int yCenter, int xBound, int yBound,
                                        int radius, int style = 0);
    public:
        static void applyRadial(unsigned short* buffer, int width, int height, int pitch,
                                int xCenter, int yCenter,
                                int radius, int style = 0);

        static void applyHorizontal(unsigned short* src,
                                    unsigned short* dst,
                                    int width, int height, int pitch,
                                    int boxw);

        static void applyVertical(unsigned short* src,
                                  unsigned short* dst,
                                  int width, int height, int pitch,
                                  int boxw);

        static void applyBoxed(unsigned short* srcImage,
                               unsigned short* dstImage,
                               int width, int height, int pitch,
                               int boxw);

        static void stylize(unsigned short* srcImage,
                            unsigned short* tmpImage,
                            int width, int height, int srcPitch, int tmpPitch,
                            int minr, int ming, int minb,
                            int maxr, int maxg, int maxb);

        static void glow(unsigned short* srcImage,
                         int width, int height, int pitch,
                         unsigned short* glowBuffer1,
                         unsigned short* glowBuffer2,
                         unsigned int cellSizeShift,
                         unsigned int scale = 65536*2, unsigned int boxw = 4);

};

#endif